MrMelbert · MrMelbert · Apr 9, 2024 · Jan 22, 2026 · Jan 22, 2026 · Jan 22, 2026
diff --git a/code/__DEFINES/living.dm b/code/__DEFINES/living.dm
@@ -211,3 +211,9 @@
 #define examining_span_normal(msg) span_infoplain(span_italics(msg))
 /// For consistent examine span formatting (small size)
 #define examining_span_small(msg) span_slightly_smaller(span_infoplain(span_italics(msg)))
+
+#define SMELL_INTENSITY_FAINT 1
+#define SMELL_INTENSITY_WEAK 6
+#define SMELL_INTENSITY_MODERATE 12
+#define SMELL_INTENSITY_STRONG 24
+#define SMELL_INTENSITY_OVERPOWERING 48
diff --git a/code/__DEFINES/traits/declarations.dm b/code/__DEFINES/traits/declarations.dm
@@ -787,6 +787,7 @@ Remember to update _globalvars/traits.dm if you're adding/removing/renaming trai
 
 //quirk traits
 #define TRAIT_ALCOHOL_TOLERANCE "alcohol_tolerance"
+#define TRAIT_ANOSMIA "anosmia"
 #define TRAIT_HEAVY_DRINKER "heavy_drinker"
 #define TRAIT_AGEUSIA "ageusia"
 #define TRAIT_HEAVY_SLEEPER "heavy_sleeper"

diff --git a/code/_globalvars/traits/_traits.dm b/code/_globalvars/traits/_traits.dm
@@ -130,6 +130,7 @@ GLOBAL_LIST_INIT(traits_by_type, list(
 		"TRAIT_ALWAYS_NO_ACCESS" = TRAIT_ALWAYS_NO_ACCESS,
 		"TRAIT_ALWAYS_WANTED" = TRAIT_ALWAYS_WANTED,
 		"TRAIT_ANGELIC" = TRAIT_ANGELIC,
+		"TRAIT_ANOSMIA" = TRAIT_ANOSMIA,
 		"TRAIT_ANTENNAE" = TRAIT_ANTENNAE,
 		"TRAIT_ANTICONVULSANT" = TRAIT_ANTICONVULSANT,
 		"TRAIT_ANTIMAGIC" = TRAIT_ANTIMAGIC,

diff --git a/code/_globalvars/traits/admin_tooling.dm b/code/_globalvars/traits/admin_tooling.dm
@@ -33,6 +33,7 @@ GLOBAL_LIST_INIT(admin_visible_traits, list(
 		"TRAIT_AGENDER" = TRAIT_AGENDER,
 		"TRAIT_AGEUSIA" = TRAIT_AGEUSIA,
 		"TRAIT_ALCOHOL_TOLERANCE" = TRAIT_ALCOHOL_TOLERANCE,
+		"TRAIT_ANOSMIA" = TRAIT_ANOSMIA,
 		"TRAIT_ANTIMAGIC" = TRAIT_ANTIMAGIC,
 		"TRAIT_ANXIOUS" = TRAIT_ANXIOUS,
 		"TRAIT_BADDNA" = TRAIT_BADDNA,

diff --git a/code/datums/components/bakeable.dm b/code/datums/components/bakeable.dm
@@ -90,11 +90,27 @@
 	baked_result.pixel_y = original_object.pixel_y
 	used_tray.AddToPlate(baked_result)
 
+	var/list/asomnia_hadders = list()
+	for(var/mob/smeller in get_hearers_in_view(DEFAULT_MESSAGE_RANGE, used_oven))
+		if(!smeller.can_smell())
+			asomnia_hadders += smeller
+
 	if(positive_result)
-		used_oven.visible_message(span_notice("You smell something great coming from [used_oven]."), blind_message = span_notice("You smell something great..."))
+		used_oven.visible_message(
+			span_notice("You smell something great coming from [used_oven]."),
+			blind_message = span_notice("You smell something great..."),
+			ignored_mobs = asomnia_hadders,
+		)
+		new /obj/effect/abstract/smell/oven/good(used_oven.loc)
 		BLACKBOX_LOG_FOOD_MADE(baked_result.type)
 	else
-		used_oven.visible_message(span_warning("You smell a burnt smell coming from [used_oven]."), blind_message = span_warning("You smell a burnt smell..."))
+		used_oven.visible_message(
+			span_warning("You smell a burnt smell coming from [used_oven]."),
+			blind_message = span_warning("You smell a burnt smell..."),
+			ignored_mobs = asomnia_hadders,
+		)
+		new /obj/effect/abstract/smell/oven/bad(used_oven.loc)
+
 	SEND_SIGNAL(parent, COMSIG_ITEM_BAKED, baked_result)
 	qdel(parent)
 

diff --git a/code/datums/diseases/advance/symptoms/fire.dm b/code/datums/diseases/advance/symptoms/fire.dm
@@ -81,7 +81,7 @@
 		living_mob.show_message(span_hear("You hear a crackling noise."), type = MSG_AUDIBLE)
 	else if(prob(50) && !HAS_TRAIT(living_mob, TRAIT_RESISTHEAT))
 		to_chat(living_mob, span_warning("You feel hot."))
-	else
+	else if(living_mob.can_smell()) //Anosmia quirk holder can't smell anything.
 		to_chat(living_mob, span_warning("You smell smoke."))
 
 /*

diff --git a/code/datums/mood_events/generic_negative_events.dm b/code/datums/mood_events/generic_negative_events.dm
@@ -590,14 +590,14 @@
 	timeout = 1 MINUTES
 
 /datum/mood_event/smoke_in_face
-	description = "Cigarette smoke is disgusting."
+	description = "They just blew disgusting smoke in my face!"
 	mood_change = -3
 	timeout = 30 SECONDS
 
 /datum/mood_event/smoke_in_face/add_effects(param)
-	// if(HAS_TRAIT(owner, TRAIT_ANOSMIA))
-	// 	description = "Cigarette smoke is unpleasant."
-	// 	mood_change = -1
+	if(!owner.can_smell())
+		description = "They just blew some unpleasant smoke in my face."
+		mood_change = -1
 	if(HAS_TRAIT(owner, TRAIT_SMOKER))
 		description = "Blowing smoke in my face, really?"
 		mood_change = 0

diff --git a/code/datums/mood_events/needs_events.dm b/code/datums/mood_events/needs_events.dm
@@ -61,14 +61,6 @@
 	description = "Oh god, that's disgusting..."
 	mood_change = -8
 
-/datum/mood_event/disgust/bad_smell
-	description = "I can smell something horribly decayed inside this room."
-	mood_change = -6
-
-/datum/mood_event/disgust/nauseating_stench
-	description = "The stench of rotting carcasses is unbearable!"
-	mood_change = -12
-
 /datum/mood_event/disgust/dirty_food
 	description = "That was too dirty to eat..."
 	mood_change = -6

diff --git a/code/datums/mutations/olfaction.dm b/code/datums/mutations/olfaction.dm
@@ -40,6 +40,10 @@
 		to_chat(owner, span_warning("You have no nose!"))
 		return FALSE
 
+	if(!living_cast_on.can_smell()) //Anosmia quirk holders can't smell anything
+		to_chat(owner, span_warning("You can't smell!"))
+		return FALSE
+
 	return TRUE
 
 /datum/action/cooldown/spell/olfaction/cast(mob/living/cast_on)

diff --git a/code/datums/quirks/negative_quirks/anosmia.dm b/code/datums/quirks/negative_quirks/anosmia.dm
@@ -0,0 +1,9 @@
+/datum/quirk/item_quirk/anosmia
+	name = "Anosmia"
+	desc = "For some reason, you can't smell anything."
+	icon = FA_ICON_HEAD_SIDE_COUGH_SLASH
+	value = -2
+	mob_trait = TRAIT_ANOSMIA
+	gain_text = span_notice("You find yourself unable to smell anything!")
+	lose_text = span_danger("Suddenly, you can smell again!")
+	medical_record_text = "Patient has lost their sensation of smell."
diff --git a/code/datums/wounds/internal_bleeding.dm b/code/datums/wounds/internal_bleeding.dm
@@ -77,6 +77,11 @@
 		if(QDELETED(src))
 			return
 
+	if(SPT_PROB(1, seconds_per_tick))
+		var/datum/blood_type/blood_type = victim.get_blood_type()
+		if(blood_type)
+			to_chat(victim, span_notice("You can taste [blood_type.reagent_type::name]."))
+
 	switch(limb.body_zone)
 		if(BODY_ZONE_HEAD)
 			if(SPT_PROB(2, seconds_per_tick))

diff --git a/code/game/objects/effects/decals/cleanable/humans.dm b/code/game/objects/effects/decals/cleanable/humans.dm
@@ -1,5 +1,8 @@
 // NON-MODULE CHANGE : This whole file
 
+#define BLOOD_SMELL_INTENSITY(blood) floor((initial(blood.bloodiness) || blood.bloodiness) * 0.2)
+#define BLOOD_SMELL_RADIUS(blood) ceil((initial(blood.bloodiness) || blood.bloodiness) * 0.04)
+
 /obj/effect/decal/cleanable/blood
 	name = "pool of blood"
 	desc = "It's weird and gooey. Perhaps it's the chef's cooking?"
@@ -43,6 +46,7 @@
 	else if(can_dry)
 		START_PROCESSING(SSblood_drying, src)
 		// update_atom_colour() // this is already called by parent via add_atom_colour
+		AddElement(/datum/element/smell, /datum/smell/blood, BLOOD_SMELL_INTENSITY(src), BLOOD_SMELL_RADIUS(src))
 
 /obj/effect/decal/cleanable/blood/Destroy()
 	STOP_PROCESSING(SSblood_drying, src)
@@ -151,6 +155,7 @@
 	update_appearance()
 	update_atom_colour()
 	STOP_PROCESSING(SSblood_drying, src)
+	RemoveElement(/datum/element/smell, /datum/smell/blood, BLOOD_SMELL_INTENSITY(src), BLOOD_SMELL_RADIUS(src))
 	return TRUE
 
 /obj/effect/decal/cleanable/blood/lazy_init_reagents()
@@ -175,6 +180,9 @@
 	merger.adjust_bloodiness(bloodiness)
 	merger.slow_dry(1 SECONDS * bloodiness * BLOOD_PER_UNIT_MODIFIER)
 
+#undef BLOOD_SMELL_INTENSITY
+#undef BLOOD_SMELL_RADIUS
+
 /obj/effect/decal/cleanable/blood/old
 	bloodiness = 0
 	dried = TRUE
@@ -434,6 +442,7 @@
 	. = ..()
 	setDir(pick(GLOB.cardinals))
 	AddElement(/datum/element/swabable, CELL_LINE_TABLE_SLUDGE, CELL_VIRUS_TABLE_GENERIC, rand(2,4), 10)
+	AddElement(/datum/element/smell, /datum/smell/decay, SMELL_INTENSITY_STRONG, 1)
 
 /obj/effect/decal/cleanable/blood/drip
 	name = "drop of blood"

diff --git a/code/game/objects/effects/decals/cleanable/misc.dm b/code/game/objects/effects/decals/cleanable/misc.dm
@@ -161,6 +161,13 @@
 	random_icon_states = list("vomit_1", "vomit_2", "vomit_3", "vomit_4")
 	beauty = -150
 
+/obj/effect/decal/cleanable/vomit/Initialize(mapload, list/datum/disease/diseases)
+	. = ..()
+	leave_smell()
+
+/obj/effect/decal/cleanable/vomit/proc/leave_smell()
+	AddElement(/datum/element/smell, "vomit", SMELL_INTENSITY_STRONG, 1)
+
 /obj/effect/decal/cleanable/vomit/attack_hand(mob/user, list/modifiers)
 	. = ..()
 	if(.)
@@ -187,6 +194,9 @@
 	icon_state = "vomitnanite_1"
 	random_icon_states = list("vomitnanite_1", "vomitnanite_2", "vomitnanite_3", "vomitnanite_4")
 
+/obj/effect/decal/cleanable/vomit/nanites/leave_smell()
+	return
+
 /obj/effect/decal/cleanable/vomit/nebula
 	name = "nebula vomit"
 	desc = "Gosh, how... beautiful."
@@ -198,6 +208,9 @@
 	. = ..()
 	update_appearance(UPDATE_OVERLAYS)
 
+/obj/effect/decal/cleanable/vomit/nebula/leave_smell()
+	return
+
 /obj/effect/decal/cleanable/vomit/nebula/update_overlays()
 	. = ..()
 	. += emissive_appearance(icon, icon_state, src, alpha = src.alpha)
@@ -211,6 +224,9 @@
 	icon_state += "-old"
 	AddElement(/datum/element/swabable, CELL_LINE_TABLE_SLUDGE, CELL_VIRUS_TABLE_GENERIC, rand(2,4), 10)
 
+/obj/effect/decal/cleanable/vomit/old/leave_smell()
+	return
+
 /obj/effect/decal/cleanable/vomit/old/black_bile
 	name = "black bile"
 	desc = "There's something wiggling in there..."
@@ -319,6 +335,7 @@
 /obj/effect/decal/cleanable/garbage/Initialize(mapload)
 	. = ..()
 	AddElement(/datum/element/swabable, CELL_LINE_TABLE_SLUDGE, CELL_VIRUS_TABLE_GENERIC, rand(2,4), 15)
+	AddElement(/datum/element/smell, "rotting garbage", SMELL_INTENSITY_MODERATE, 2, "stench")
 
 /obj/effect/decal/cleanable/ants
 	name = "space ants"
@@ -438,6 +455,8 @@
 	if(burn_stacks)
 		burn_amount = max(min(burn_stacks, 10), 1)
 
+	AddElement(/datum/element/smell, "fuel", floor(SMELL_INTENSITY_MODERATE * burn_amount * 0.1), 1, "stench")
+
 /obj/effect/decal/cleanable/fuel_pool/fire_act(exposed_temperature, exposed_volume)
 	. = ..()
 	ignite()

diff --git a/code/game/objects/effects/decals/cleanable/robots.dm b/code/game/objects/effects/decals/cleanable/robots.dm
@@ -86,25 +86,9 @@
 
 /obj/effect/decal/cleanable/oil/Initialize(mapload, list/datum/disease/diseases)
 	. = ..()
-	AddElement(/datum/element/easy_ignite) // NON-MODULE CHANGE
-	add_blood_DNA(list("UNKNOWN DNA" = /datum/blood_type/oil)) // NON-MODULE CHANGE : For bloody shoes // Yeah don't think about it too much
-
-// /obj/effect/decal/cleanable/oil/attackby(obj/item/I, mob/living/user)
-// 	var/attacked_by_hot_thing = I.get_temperature()
-// 	if(attacked_by_hot_thing)
-// 		user.visible_message(span_warning("[user] tries to ignite [src] with [I]!"), span_warning("You try to ignite [src] with [I]."))
-// 		log_combat(user, src, (attacked_by_hot_thing < 480) ? "tried to ignite" : "ignited", I)
-// 		fire_act(attacked_by_hot_thing)
-// 		return
-// 	return ..()
-
-// /obj/effect/decal/cleanable/oil/fire_act(exposed_temperature, exposed_volume)
-// 	if(exposed_temperature < 480)
-// 		return
-// 	visible_message(span_danger("[src] catches fire!"))
-// 	var/turf/T = get_turf(src)
-// 	qdel(src)
-// 	new /obj/effect/hotspot(T)
+	AddElement(/datum/element/easy_ignite)
+	AddElement(/datum/element/smell, /datum/smell/oil, SMELL_INTENSITY_STRONG, 2)
+	add_blood_DNA(list("UNKNOWN DNA" = /datum/blood_type/oil))
 
 /obj/effect/decal/cleanable/oil/streak
 	icon_state = "streak1"

diff --git a/code/game/objects/items/cigs_lighters.dm b/code/game/objects/items/cigs_lighters.dm
@@ -466,6 +466,8 @@ CIGARETTE PACKETS ARE IN FANCY.DM
 /// Handles processing the reagents in the cigarette.
 /obj/item/cigarette/proc/handle_reagents(mob/living/carbon/smoker, seconds_per_tick)
 	reagents.expose_temperature(heat, 0.05)
+	if(reagents.has_reagent(/datum/reagent/drug/nicotine, 1, check_subtypes = TRUE))
+		new /obj/effect/abstract/smell/cigarette_smoke(get_turf(smoker))
 	if(reagents.total_volume <= 0) //may have reacted and gone to 0 after expose_temperature
 		return
 

diff --git a/code/game/objects/structures/bonfire.dm b/code/game/objects/structures/bonfire.dm
@@ -115,6 +115,7 @@
 	bonfire_burn()
 	particles = new /particles/bonfire()
 	START_PROCESSING(SSobj, src)
+	AddElement(/datum/element/smell, "smoke", SMELL_INTENSITY_STRONG, 5)
 
 /obj/structure/bonfire/fire_act(exposed_temperature, exposed_volume)
 	start_burning()
@@ -173,6 +174,7 @@
 	set_light(0)
 	QDEL_NULL(particles)
 	STOP_PROCESSING(SSobj, src)
+	RemoveElement(/datum/element/smell, "smoke", SMELL_INTENSITY_STRONG, 5)
 
 /obj/structure/bonfire/buckle_mob(mob/living/buckled_mob, force = FALSE, check_loc = TRUE)
 	if(..())

diff --git a/code/game/objects/structures/headpike.dm b/code/game/objects/structures/headpike.dm
@@ -22,6 +22,7 @@
 	if(mapload)
 		CheckParts()
 	pixel_x = rand(-8, 8)
+	AddElement(/datum/element/smell, /datum/smell/decay, SMELL_INTENSITY_MODERATE, 2)
 
 /obj/structure/headpike/Destroy()
 	QDEL_NULL(victim)

diff --git a/code/game/turfs/open/_open.dm b/code/game/turfs/open/_open.dm
@@ -13,6 +13,8 @@
 	var/broken = FALSE
 	var/burnt = FALSE
 
+	/// Assoc list of smell datum to sum of intensities present on this turf
+	VAR_FINAL/list/collective_smells
 
 /// Returns a list of every turf state considered "broken".
 /// Will be randomly chosen if a turf breaks at runtime.

diff --git a/code/modules/antagonists/changeling/powers/pheromone_receptors.dm b/code/modules/antagonists/changeling/powers/pheromone_receptors.dm
@@ -23,6 +23,9 @@
 /datum/action/changeling/pheromone_receptors/sting_action(mob/living/carbon/user)
 	..()
 	var/datum/antagonist/changeling/changeling = IS_CHANGELING(user)
+	if(HAS_TRAIT(user, TRAIT_ANOSMIA)) //Anosmia quirk holders can't smell anything
+		to_chat(user, span_warning("We can't smell!"))
+		return
 	if(!receptors_active)
 		to_chat(user, span_warning("We search for the scent of any nearby changelings."))
 		changeling.chem_recharge_slowdown += 0.25